Vaishnava Dharmashastra 54.15

54.15

nāstiko nāstikavṛttiḥ kṛtaghnaḥ kūṭavyavahārī brāhmaṇavṛttighnaś caite saṃvatsaraṃ bhaikṣyeṇa varteran ||

An atheist, one who leads the life of a member of the Kandâla or of other low castes that dwell outside the village (Bâhyas) an ungrateful man, one who buys or sells with false weights, and one who deprives Brâhmanas of their livelihood (by robbing them of a grant made to them by the king or private persons, or by other bad practices), all those persons must subsist upon alms for a year.